The Magic School Bus S03 E12 Rocks and Rolls

"Seat belts, everyone!"

To celebrate the founding of Walkerville, Ms. Frizzle’s class sculpts a stone likeness of its founding father, Captain Walker. As they add the finishing touches, the statue tumbles down the mountain. Ms. Frizzle turns the Bus into a huge boulder and the kids into rocks while bumping down the mountain in a desperate attempt to save the statue.